Valet



(NoMOdeL) E. E. & L. O. BEAUVALET.

ELECTRIC ARC LAMP.

No. 495,772. Patented Apr. 18, 1893.

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UNITED STATES PATENT OFFICE.

ERNEST EUGENE BEAUVALET AND LEON CHARLES BEAUVALET, OF PARIS, FRANCE.

ELECTRIC-ARC LAM P.

SPECIFICATION forming part of Letters Patent No. 495,772, dated April18, 1893.

Application filed July 11, 1892.

.To all whom it may concern:

Be it known that we, ERNEST EUGENE BEAU- VALET and LEON CHARLESBEAUVALET, residing at Paris, in the Republic of France,

5 have invented new and useful Improvements in Electric-LightRegulators, of which the following is a full, clear, and exactdescription.

The object of our invention is to provide a differential regulator forelectric lights, and

I consists of certain parts and combinations thereof hereinafter morefully described and claimed.

In order to make our invention more clearly understood we have shown inthe accompany- I ing drawings means for carrying the same into practicaleffect.

In said drawings, Figure 1 is a view of a regulator embodying ourinvention. Fig. 2 is a detailed view of same.

In our improved device the distance between the carbon points isregulated by the movement of the lever arm L governed by the two cores Nand N which are drawn into the solenoids S and S.

The two carbon carriers are held by a string, a chain, or any othermeans of suspension, attached to the superior carbon carrier P, passingover the pulley d, around the wheel V which may or may not be toothed,passing over two pulleys G fixed to the lower part of the carbon carrierP, passing up the tube T, and attached at the point A to the lever L. Onthis same lever L is joined a rod B controlling the pawl C which latterengages the teeth of the ratchet wheel R and holds the wheel V while thebrake F takes its place. The stoppage of the wheel V is obtained bymeans of the brake F wedged on the lever L, and which fastens itself ona smooth periphery arranged for this purpose on the wheel V. Thenegative and positive carbons are embedded in carbon carriers havingspecial holders. The regulating of the distance for lighting is obtainedby means of a peg or abutment a screwed into the lever L and restingupon the solenoid S. The are distance while working is regulated bymeans of a spring 0' acting either on the core N of the solenoid S, asshown in Fig. 1, or directly on the lever L.

The operation of the device is as follows:

Serial No. 439,731. (No model.)

The current arriving by the binding screw 1) traverses the solenoid S,thence to the carbon carrier P, and from there goes to the lower carboncarrier P and leaves by the binding screw Z). At this time the carbonsbeing in contact the core N is attracted, the pawl G acts on the ratchetR, the brake F applies itself to the wheel V and in consequence of thismovement of the lever arm the lower carbon moves away. This brake may incertain parts be omitted without detriment to the action of theregulator. The diminishing intensity in the solenoid S in consequence ofthe augmentation of the distance of the carbons increases in thesolenoid S, the core U is attracted, and the wheel V is set free.

Having thus described our invention, what we claim as new is- 1. Incombination, the carbons, and holders therefor, supporting means, thewheel V having a ratchet the lever L the solenoids for controlling thesame, the pawl for operating the ratchet, the bar B for operating thesame from the lever L and the cord connected with the upper carbonholder around the wheel V, down under the lower carbon holder and up tothe lever L to which it is secured, substantially as described.

2. In combination, the carbon points with their holders, the solenoidsthe lever L, controlled thereby, the wheelV having a ratchet wheel thepawl and its lever for operating the same, the cord connecting thecarbon holders with the wheel V, the brake, both the said brake and thepawl lever being connected to the lever L, to be operated thereby,substantially as described.

3. In an electric lighting device the carbon sticks, holders therefor,means for supporting same, lever arm L, solenoids S S, having coresgoverning the movement of said lever L, wheel V provided with ratchetwheel R, rod B attached at one end to the lever arm L and provided atits other end with pawl 0 e11- gaging ratchet wheel R, brake F engagingwheel V, and spring 0", substantially as described.

4c. In an electric lighting device the carbon sticks, holders therefor,means for supporting the same, lever arm L, solenoids S S, having coresgoverning the movement of said lever L, wheel V provided with ratchetwheel R, wehave hereunto set our hands this 25th day rod B attached atone end to the lever arm L of May, 1892.

and provided at its other end with pawl C en- EBNEST EUGENE BEAUVALET.

gaging ratchet wheel R, brake F engaging LEON CHARLES BEAUVALET. 5 wheelV, spring 4*, and peg a, substantially as Witnesses:

described.

Fnnnnnrc MATRAY, In testimony that we claim the foregoing VICTOR MATRAY.

